Valve mechanism



Allg- 13, 1935- w. R. GRlswoLD 2,011,243

VALVE MECHAN; sM

Filed Jan. s1, 1935 lli EEE'

NHL TERE. ERISA/ULI.

Patented Aug. 13, `1935` i d l 12,911,243 j L VALVE!MECHArIVIsMn 'corporation 'of Michigan .Walter` Griswold, DetroihfiMlicli., 'assignorl to Packard Motor Car Co mpanyetrot, Mich., a

, .Y .nppiieation January/ 31, 193s, serial Neissa-i90 59 claims. `(o1. 137-139) `This invention relates to valvelmechanisrri4 and more particularly tc valve control mechanism:

`Insome valve mechanisms, the'valve elementisV held in open position by resilient means ands erated clutch mechanismjvfor motor' vehicles.l I

The inertia means -is Ausually pivotally mounted and` connected to move :the valve element into closed position upon changing position angularly' on its mounting.` Inclination of thefvehicleor the device with which the valve mechanism is associated will shift the inertiaimember a'ngularly onits mounting 'and will shut the valve-without .i `the impetus of sudden movement, and .this effect is obviously undesirable. i M

An object of my) invention is to provides. newV and improved form of inertia controlledyalve mechanism which will `function 'toA actuate-the valve element only -4upon sudden movementf Another object of my invention isto provide a f valve regulating mechanism "in" which a-penduliim inertia control member canbcshiftedgasto its inclination, without actuating a "valve element withwhich it is connected.` ,A A further object of my invention isvto provide.v

an actuatorfor a valvelwhich is responsive only l to inertia in shifting the valve position.

Other objects of the invention will appear from i the following description taken in connection with the drawing, which formsv a part of this specification, and in which:

Fig. l is a vertical sectional viewof a valve mechanism incorporating my invention;

Fig. 2 is a sectional view of the `same taken on line 2-2 of Fig. l.

Referring now to the drawing by characters of reference, I0 represents `generally a valve mechanism in which there is a cylindrical casing I I having an inlet boss I2 and an outlet boss I3.

` In the casing is mounted a piston valve element I4 having a peripheral groove I 5 adapted to register with a passage I6 leading throughthe inlet boss and a passage I 'I leading through the outlet boss. i i i A hollow cap I8 screws into one end of the casing and a sleeve I9 screws into the other end of the casing. Coil spring 20 extends between the valve element and the cap and coil spring 2| eX- tends between the valve element and the sleeve.

` These springs are arranged to normally maintain the valve element in a position in the casingA where the groove I5 willestablish wide open communication between thefinlet and outlet passagesi and I l. Suitable lock-nuts 22 are screwed on the sleeve and cap into vengagement with the casing to secureV desired 'adjustmentof the springs. 5`

The valve casing is xedto a housing 23 which' is mounted upon a support 241and secured thereto by suitable means, such as bolts 25. One end ofthe housing is `enclosed byadetachable cover y 26,?- thus allowing access to i the i inertia valve l0 regulating mechanism mounted within the hous- In order to move the valve elementV into closed position, there is)v a rod`2lfwhich^extends `through sleeve `lil and is `pivotally connectedto ears eX- lo) tending from the valvee element, as indicated at 28o The other end of the rod, which projects intol the'housing, extends into"a7`slot 29 in the'shank 30 oan inertiaimemberwhich has enlarged end issuspended-by the links-and the center of gravity 30 of the inertia member is at its point of pivot.

The operation ofthe inertia device depends on the polar movement of inertia forces about the pin 35. When the housing is in an angular position, the links 33 can slowly take inclined positions 35 without4 the inertia member changing its rela tive position, and thus the valve will remain open even though` the housing is inclined since the springs 20 and 2| will tend to maintain the static equilibrium positions. 40

Upon the application of sudden forces to the housing, the links 33 and the inertia member will act as a combination simple pendulum and torsion pendulum. Swinging of the pivot it by a force sufhcient to overcome the resistance of the springs will move the Valve rod axially into position such that the groove no longer connects the passages I6 and Il, thus shutting olic flow. This occurs because any-forceswhch would rotate the inertia memberto maintain the pivot-32 stationary must be supplied bythe valve and theresistance of its associated springs. The springs are purposely proportioned so that they will not have suiiicient tension to cause such rotational eiect on the inthe mechanism.

ertia member, thus allowing axial displacement of the valve, according to any predetermined plan of force applied to the housing.

It will be seen that the inertia member will not be shifted to move the valve upon inclination of the housing, but will shift its position to actuate the valve upon a predetermined sudden movement of the housing sucient to overcome the resistance of the springs. This device can be applied to various regulating systems where ow control is desired and, for this purpose, pipes 40 are connected with the inletand outlet passages I6 and Il. Although the invention has been described in connection with a specic embodiment, the principles involved are susceptible of numerous other Y applications which will readily Voccur to persons skilled in the art. The invention is therefore to be limited only as indicated by the scope of the appended claims.

What I claim is:

1. Valve mechanism comprising a valve element, resilient means associated to normally maintain the valve element in a predetermined position, an inertia member connected to move the valve, and suspended supporting means on which the inertia member is movably mounted.

2. Valve mechanism comprising an axially movable valve element, resilient means associated to normally maintain the valve element in a predetermined positionk axially, an inertia member connectedto move the valve axially, and suspended link members to which the inertia member is pivoted.

3. Valve mechanism comprising an axially movable valve element, resilient means associated to normally maintain the valve element in open position, an inertia member, suspended means to which the inertia member is pivoted at its center of gravity, and a connector. between an arm of the inertia member and the valve element, said inertia member actuating they connector to closeV the val-ve only upon sudden movement of 4. In combination with a valve having a valve element normally held in open'position axially by resilient means, of regulating means comprising a f rodV extending axially from the valve element, a

pair of suspended links between which the rod extends, and an inertia memberl intermediate the links to which the rod is p'ivotally'connected, saidv inertia member being pivotally carried by the links.

5. Valve operating means comprising a valve actuator rod, an inertia member to which the rod is pivoted, said member extending substantially normal to the rod, a link member on each side of the inertia member, a pivot member for the upper end of said links, and a pivot member carried by the lower ends of the links on which the inertia member is pivoted at its center of gravity, said rod being pivoted to the inertia member between the pivot members.

6. Valve mechanism comprising a valve element resiliently held in a predetermined position axially, a housing, a rod pivoted to one end of the valve element and extending into the housing, a pivot pin in the top portion of the housing, a pair of spaced links suspended from the pivot pin, a pivot member carried by and extending between the links, and an inertia member mounted at its center of gravity on the pivot member and intermediate the links, the rod being pivoted to the inertia member above'the center of gravity there- '7 .Y In a valve device, regulating mechanism comprising an inertiaA member, control means pivoted to the linertia member, and a pendulum support to which the inertia member is pivoted, said pen-l dulum support being swingable on its pivot to maintain the-pivotal point of the control means stationary upon inclination of the valve device.

8. In a valve control device, a slidably mounted valve normally maintained in a predetermined position, inertia means pivotally connected to the valve, said inertia means being movable to shift the position of the valve upon sudden movements of the device, and pivoted means supporting said inertia means in a relation such that it is unresponsive to changes in the inclination of the device from normal position to shift the valve. y

9. Valve mechanism comprising an adjustable valve element, means associated to normally maintain the Vvalve element in a predetermined position of adjustment, an inertia member connected to adjust'the valve, and supporting means for the inertia member, 'the position of said inertia member adjustingthe position of the valve only in response to sudden movement of the supporting means. 1

' WALTER R. GRISWOLD. 

